Improvement in railway-car brakes



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN RAILWAY-CAR BRAKES.

Specification forming part of Letters Patent No. 119,103, dated September 19, 1871.

To all whom it may concern:

Beit known that we,^DANIEL ARNDT and DIL- LINGHAMCLARK WASHINGTON, of Cleveland, in the county of Cuyahoga and in the State of Ohio, have invented certainA new and useful Improvements in Car-Brakes; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.

Thenature of our invention consists in a carbrake which operates both upon the wheels and track, as will be'hereinafter more fully set forth.

In order to enable others skilled in the art to which our invention appertains to makeand use the same, we will nowproceed to describe its construction and op eration, referring to the annexed drawing, in which- Figure l is alongitudinal vertical section, and Fig. 2 is a bottom view of a car-truck with our brake attached.

A represents the platform or bed; B B, the wheels; and C C, the axles of a car-truck, con

'structed in any of the known and usual ways.

Each of the axles C passesthrough elongatedslots in two levers, D D, the outer ends of which are connected by a shaft or rod, E, having the brakeblocks G G attached to its ends. The inner ends of the four levers D D are hinged or pivoted and connected together by a center rod or shaft, E', to which the chain a, is attached, said chain passing up over a pulley, b, and thence to the usual upright shaft or spindle H for applying the brakes. The brake is thrown off by springs d d bearing down upon the rod E. The levers D D need not necessarily be placed upon the axles C C; they may be placed upon separate bearings in any suitable manner. The brake-blocks or shoes Cr G are constructed, as shown in Fig. 1, with two braking-surfaces, x and y, the former braking on the wheel and the latter at the same time upon the upper surface of the rail. The braking-surface y may be of any length desired, making any desired amount of friction. By this brake having, as readily seen, double friction, the car may be stoppedin a far shorter time than by the ordinary brake.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

The slotted levers D D, connected by means ofthe shafts or rods E E and E', in combination with the axles C C, blocks G G, chain a., pulley b, springs d d, and shaft H, all constructed and arranged to operate substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 11th day of May, 1871.

DANIEL ARNDT. D. C. WASHINGTON Witnesses ALFRED ELWELL, T. M. MAEGY. 

